javascript - Why is this Javascript syntax illegal?

Question

Both Chrome and Safari report this is illegal. They report "unexpected token 'this'" pointing at the 'this.b'. Here is the minimum code needed to show the problem:

function x(){ this.a = function() {} this.b = function() {}  }

It only happens if the two declarations are on the same line. Any ideas? Looks legal to me.
It's annoying because this is what comes out of a Javascript minifier.

Answer 1

Javascript 将自动在新行上插入分号。这里缺少的是用于分隔语句结尾的原始分号。

在你的右大括号之后插入分号，就像正确的 JS 一样，它会正常工作。

Answer 2

函数内部的第一条语句没有分号结束x。

分号插入仅适用于新行。

// Valid but nasty
this.a = function() {}
this.b = function() {}

// Valid
this.a = function() {};
this.b = function() {};

// Valid
this.a = function() {}; this.b = function() {};